<template>
    <div>
        <!-- 面包屑导航 -->
        <border-header second="用户管理" third="用户列表"></border-header>
        <!-- 卡片视图区域 -->
        <el-card class="box-card">
           <el-row :gutter="20">
                <el-col :span="8">
                     <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
                        <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
                    </el-input>
                </el-col>
                <el-col :span="4">
                    <el-button type="primary" @click="addDialogVisible=true">添加用户</el-button>
                </el-col>
            </el-row>
            <!-- 用户列表主体 -->
            <el-table :data="userList" stripe border>
                <el-table-column type="index"></el-table-column>
                <el-table-column prop="username" label="姓名"></el-table-column>
                <el-table-column prop="email" label="邮箱"></el-table-column>
                <el-table-column prop="mobile" label="电话"></el-table-column>
                <el-table-column prop="role_name" label="角色"></el-table-column>
                <!-- 使用作用域插槽的方式，通过scope.row获得所在行的所有数据 -->
                <el-table-column label="状态">
                    <template slot-scope="scope">
                        <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)"></el-switch>
                    </template>
                </el-table-column>
                <el-table-column label="操作" width="180px">
                    <template slot-scope="scope">
                        <!-- 修改按钮 -->
                        <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
                        <!-- 删除按钮 -->
                        <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
                        <!-- 分配按钮 -->
                        <el-tooltip effect="dark" content="分配角色" placement="top-start" :enterable="false">
                            <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
                        </el-tooltip>
                    </template>
                </el-table-column>
            </el-table>

            <!-- 分页区域 -->
            <el-pagination @size-change="handleSizeChange" @current-change="handleCurrentChange" :current-page="queryInfo.pagenum"
            :page-sizes="[1, 2, 5, 10]"
            :page-size="queryInfo.pagesize"
            layout="total, sizes, prev, pager, next, jumper"
            :total="total">
            </el-pagination>
        </el-card>

        <!-- 添加用户的对话框 -->
        <el-dialog title="添加用户" :visible.sync="addDialogVisible" width="50%" @close="addDialogClosed">
        <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
            <el-form-item label="用户名" prop="username">
                <el-input v-model="addForm.username"></el-input>
            </el-form-item>
            <el-form-item label="密码" prop="password">
                <el-input v-model="addForm.password"></el-input>
            </el-form-item>
            <el-form-item label="邮箱" prop="email">
                <el-input v-model="addForm.email"></el-input>
            </el-form-item>
            <el-form-item label="手机" prop="mobile">
                <el-input v-model="addForm.mobile"></el-input>
            </el-form-item>
        </el-form>
        <span slot="footer" class="dialog-footer">
            <el-button @click="addDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="addUser">确 定</el-button>
        </span>
        </el-dialog>

        <!-- 编辑用户的对话框 -->
        <el-dialog
        title="编辑用户"
        :visible.sync="editDialogVisible"
        width="50%" @close="addDialogClosed">
        <el-form :model="editForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
            <el-form-item label="用户名">
                <el-input v-model="editForm.username" disabled></el-input>
            </el-form-item>
            <el-form-item label="邮箱" prop="email">
                <el-input v-model="editForm.email"></el-input>
            </el-form-item>
            <el-form-item label="手机" prop="mobile">
                <el-input v-model="editForm.mobile"></el-input>
            </el-form-item>
        </el-form>
        <span slot="footer" class="dialog-footer">
            <el-button @click="editDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="editUserInfo">确 定</el-button>
        </span>
        </el-dialog>

        <!-- 分配角色的对话框 -->
        <el-dialog title="分配角色" :visible.sync="setRoleDialogVisible" width="50%" @close="setRoleDialogClosed">
          <div>
            <p>当前的用户:{{ userInfo.username }}</p>
            <p>当前的角色:{{ userInfo.role_name }}</p>
            <p>选择新角色:
              <el-select v-model="selectdRoleId" placeholder="请选择">
                <el-option v-for="item in roleList" :key="item.id" :label="item.roleDesc" :value="item.id"></el-option>
              </el-select>
            </p>
          </div>
          <span slot="footer" class="dialog-footer">
              <el-button @click="setRoleDialogVisible = false">取 消</el-button>
              <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
          </span>
        </el-dialog>
    </div>
</template>

<script>
import http from '@/util/http'
import borderHeader from '@/components/BorderHeader'
export default {
  data () {
    // 自定义校验规则
    const checkEmail = (rule, value, cb) => {
      const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
      if (regEmail.test(value)) {
        return cb()
      }
      cb(new Error('请输入合法的邮箱'))
    }
    const checkMobile = (rule, value, callback) => {
      const regMobile = /^(0|86|17951)?(13|[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
      if (regMobile.test(value)) {
        return callback()
      }
      callback(new Error('请输入合法的手机号'))
    }
    return {

      // 获取用户列表的参数对象
      queryInfo: {
        query: '',
        pagenum: 1,
        pagesize: 2
      },
      userList: [],
      total: 0,
      // 控制添加用户的对话框的显示与隐藏
      addDialogVisible: false,
      // 添加用户的表单数据
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      // 添加表单的验证规则
      addFormRules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 3, max: 5, message: '长度在 3 到 10 个字符', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
        ],
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机号', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },

      // 编辑用户对话框的显示与隐藏
      editDialogVisible: false,
      // 查询到的用户信息对象
      editForm: {},
      // 分配角色的对话框的显示与隐藏
      setRoleDialogVisible: false,
      // 需要被分配权限的用户信息
      userInfo: {},
      // 所有的角色列表
      roleList: [],
      // 已选中的新角色
      selectdRoleId: ''
    }
  },
  created () {
    this.getUserList()
  },
  methods: {
    async getUserList () {
      const { data: res } = await http.get('/users', { params: this.queryInfo })
      if (res.meta.status !== 200) return this.$message.error('获取用户列表失败')
      this.userList = res.data.users
      this.total = res.data.total
    },
    // 改变每页显示多少条的函数(pagesize的改变)
    handleSizeChange (newSize) {
      // console.log(newSize)
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    // 改变这是第几页的函数(pagename的改变)
    handleCurrentChange (newPage) {
      // console.log(newPage)
      this.queryInfo.pagenum = newPage
      this.getUserList()
    },
    // 监听swich开关改变的事件
    async userStateChanged (userinfo) {
      // console.log(userinfo)
      // 调用接口，改变开关状态
      const { data: res } = await http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
      if (res.meta.status !== 200) {
        userinfo.mg_state = !userinfo.mg_state
        return this.$message.error('改变用户状态失败')
      }
      this.$message.success('改变用户状态成功')
    },
    // 监听添加用户对话框关闭的事件
    addDialogClosed () {
      this.$refs.addFormRef.resetFields()
    },
    // 添加用户的点击处理函数
    addUser () {
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) return
        // 发起添加用户的请求
        const { data: res } = await http.post('users', this.addForm)
        if (res.meta.status !== 201) return this.$message.error('添加用户失败')
        this.addDialogVisible = false
        // 刷新用户列表的数据
        this.getUserList()
        this.$message.success('添加用户成功')
      })
    },
    // 修改用户对话框的点击事件
    async showEditDialog (id) {
      this.editDialogVisible = true
      const { data: res } = await http.get('users/' + id)
      if (res.meta.status !== 200) {
        return this.$message.error('查询用户信息失败')
      }
      this.editForm = res.data
    },
    // 修改用户信息并提交
    editUserInfo () {
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) return
        const { data: res } = await http.put('users/' + this.editForm.id, { email: this.editForm.email, mobile: this.editForm.mobile })
        if (res.meta.status !== 200) {
          return this.$message.error('修改用户信息失败')
        }
        this.editDialogVisible = false
        // 刷新
        this.getUserList()
        this.$message.success('修改用户信息成功')
      })
    },
    // 删除用户信息
    async removeUserById (id) {
      const confiemResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      // 如果用户确认删除，则返回值是confirm
      if (confiemResult !== 'confirm') {
        return this.$message.info('已取消删除')
      }
      const { data: res } = await http.delete('users/' + id)
      if (res.meta.status !== 200) return this.$message.error('删除用户失败')
      this.getUserList()
      this.$message.success('删除用户成功')
    },
    // 分配角色的点击事件
    async setRole (userInfo) {
      this.userInfo = userInfo
      // 获取所有的角色列表
      const { data: res } = await http.get('roles')
      this.roleList = res.data
      this.setRoleDialogVisible = true
    },
    // 分配角色确定时的点击事件
    async saveRoleInfo () {
      if (!this.selectdRoleId) {
        return this.$message.error('请选择要分配的角色')
      }
      const { data: res } = await http.put(`users/${this.userInfo.id}/role`, { rid: this.selectdRoleId })
      if (res.meta.status !== 200) return this.$message.error('分配角色失败')
      this.$message.success('更新角色成功')
      this.getUserList()
      this.setRoleDialogVisible = false
    },
    // 监听分配角色对话框关闭
    setRoleDialogClosed () {
      this.selectdRoleId = ''
      this.userInfo = {}
    }
  },
  components: {
    borderHeader
  }
}
</script>
